Meter model

There are two types of fluoride lon-selective electrodes available [27] Onon model 96-09-00, a combination fluoride electrode, and model 94-09-00, which requires a reference electrode The author prefers to use Onon model 94-09-00 because it has a longer operational life and is less expensive When an electrode fails, the reference electrode is usually less expensive to replace The Fisher Accumet pH meter, model 825 MP, automatically computes and corrects the electrode slope It gives a direct reading for pH, electrode potential, and concentra tion in parts per million The fluoride lon-specific electrode can be used for direct measurement [2S, 29] or for potenPometric titration with Th" or nitrate solutions, with the electrode as an end point indicator... 

Raum-mass, n. measure of capacity or volume, cubic measure, -menge,/. amoimt of space, volume, -meter, m. cubic meter, -modell, n. space model, -orientierung,/. orientation in space, -quantelung, /. spatial quantization. -richtung,/. direction in space, -strahl,... 

Obtained with a Hunter Color and Color difference Meter, Model D25... 

Belton Road West, Loughborough Leicestershire LEll OTR Digital Panel Meter - Model 2751-K Dlgltron Instrumentation Mead Lane, Hertford Hertforshire SG13 7AW... 

The MUF resin pH was determined using pH meter model pH 340-A/SET l-MTM. The pH meter was calibrated before it was used to determine the pH of the resin. The viscosity was determined using the Cole-Parmer 98936-15 viscometer (R2 spindle, lOOrpm speed). The storage life was a test of shelf life of the MUF resin under the ambient environment. Resin was first stored at ambient room temperature. Viscosity of the resin was checked for every three to four days. The ratio of water that can be added into resin before it turned turbid or precipitated is called resin solubility. The resin solubility was determined by divide the weight of resin and the weight of water added into resin before it turned turbid or precipitated. The curing period of a resin was defined as the time period for the resin to be hardened after application in a 30°C and 1.0% of NH4CI powder (as hardener). 

Ethylene was polymerized with 2.5 pmol catalysts in toluene / CH2CI2 for 30 min. at different temperatures and 5 psig ethylene pressure. Polymerization rate was determined fitim the rate of consumption, measured by a hotwire flow meter (model 5850 D ftom Brooks Instrument Div.) connected to a personal computer throu an A/D converter. Polymaization was quenched by the addition of methanol containing HCl (5 v/v %). The polymar was washed with an excess amount of methanol and dried undw vacuum at 50 C. 

A stress-dependent viscosity model, which has the same general characteristics as the Carreau model, is the Meter model (Meter, 1964) ... 

Dissolution Measurement. Resist solutions 1n mixtures of Isoamyl acetate/cyclohexanone/methyl Isobutyl ketone (90 5 5 by volume) were filtered through 0.45 pm disc filters, then spin-coated onto silicon wafers at about 2000 rpm. The coated wafers were prebaked 1n a convection oven at 90°C for 1 hour, then stored 1n a desiccator. The basicities of the alkaline solutions were titrated by a standard HC1 solution with a Fisher Accument pH meter, Model 805 MP. The film thickness 1s about 2 pm. Resist dissolution was measured by a He-Ne laser Interferometer 1n a thermostated bath at the desired temperatures (12.131-... 

Analytikjena Atomic Absorption Spectrometer equipped with an aluminum hollow cathode lamp was used to measure aluminum concentrations. The wavelength and spectral bandpass were set at 309.3 and 1.2 run, respectively. Gas/Oxidant ratio was 0.553. A digital pH meter model Metrohm was used for pH measurements. 

The conductivity measurement was performed at 25 C by a conductivity meter MODEL CM-30ET(TOA Electronics Ltd.). 

The contact angle was measured using a FACE contact angle meter Model CA-X150. 

The sonic speed used was longitudinal wave speed, measured using a pulse propagation meter (Model 4, H. M. Morgan Co., Cambridge, Mass.). Pulse frequency was 8-10 kHz. Transverse wave velocity was calculated from longitudinal wave velocity using the approximation... 

Potentiometer Orion pH Meter (model 420) for Ti02 potential determination a magnetic stirrer VELP. The experimental temperature was 25.0 0.5°C. The UV source consists of POLILIGHT supplied by Rofin (Dingley, Victoria, Australia) which uses high-quality interference filters, a central 350nm UV wavelength (Fig. 11.1). 

Apparatus. The diameters of gel disks were measured with a Cambridge Instruments Stereoscope with a micrometer reticle. An Ohaus GA200D balance was used to weigh swollen gel disks. The volume was calculated from the weight assuming a density of 1.00. An Orion Research pH meter (Model EA920) and electrode were used to monitor pH. A BioRad electrophoresis chamber was used to form the gel slab. 

Distilled water was dropped on the surface of the skin, and pH was determined with a pH meter (Model D-12, Horiba Manufacturing Co., Ltd., Tokyo, Japan). 

The plasma deposition step when the anode assembly was removed in flow system is designated by the process code Tfs. In the plasma deposition in a closed reactor system, the reactor chamber was first pumped down to less than 1 mtorr. The reactor chamber was then isolated from the pumping system by closing the main valve located in between. TMS gas, controlled by an MKS mass flow meter (model 247C), was then fed into the reactor. After the system pressure reached a preset point, TMS gas feeding was stopped and DC power was applied to initiate the glow... 

The equilibrium isotherms for adsorption of peptide were measured by the batch method. Equilibrium was fully reached in 4 days. The solution for the peptide was analyzed with a Shimadzu Liquid Chromatograph Model LClOATvp and a Shimadzu Fluorescence HPLC Monitor Model FLD-1. The pH of the equilibrium solution was analyzed with a Horiba pH meter Model F-23. 

Equipment. Silver filters of 0.45-pm pore size and 47-mm and 142-mm diameter were obtained from Osmonics, Inc., Minnetonka, MN. Stainless-steel pressure filtration equipment (47-mm and 142-mm plate filtration units) was obtained from Millipore (Bedford, MA). XAD-8 resin was purchased from Supelco, Inc. (Bellefonte, PA) and cation-exchange resin was purchased from Fisher Scientific (Ag-MP-5, Springfield, NJ). A Millipore XX80 peristaltic pump was used in the isolation of humic substances (Bedford, MA), and the freeze drying unit was a FTS Systems Flex Dry freeze drier, an FTS Systems shell freezer, and an FTS model VP62A vacuum pump (Stone Ridge, NY). The specific conductance meter (model 604) was obtained from Amber Science, Inc., Eugene, OR. 

Gel permeation chromatography Molecular weights of the polymers and their distributions were measured using a gel permeation chromatograph, with THF as the elution solvent. The GPC was equipped with a differential refractomonitor, Model LDC 1107 and a UV (254 nm) absor-ance meter. Model 153 (Beckman), in series. The GPC traces given in... 

Color. A Hunter color difference meter, Model D25D2 was used to evaluate the color of the canned products. A yellowish green... 

To determine the effect of antioxidant and antimicrobial agents on juice stability, pH (Orion Research Co. Analog pH Meter, Model 301). juice color (Hunter D25 Color Difference Meter) and microbial total counts were monitored as indicators of juice quality. 

Apparatus. Spectrofluorometer SPEX Fluorolog-2 (Edison, NJ, USA). Xenon lamp 450-W (OSRAM, Germany) and photomultiplier tube (R 928 Hamamatsu Co.) powered at 950 V as the detector. Excitation and emission monochromator slits, wavelength increment, and integration time were set at 1 mm, 1 nm and 1 second respectively. A pH meter (Model Orion 520A, USA) was used for pH adjustment. Basic procedure. Benserazide solution 2 mL (1.0 x 10 6 1.0 x 10 4mol/L) was added to 2 ml of Triton X-100 solution (4.0 10 4 mol/L) and 2 mL pH 4.0... 

Apparatus. SPEX Fluorolog-2 spectrofluorometer (Edison, NJ, USA)., 450-W xenon lamp, R 928 photomultiplier tube powered at 950V (Hamamatsu Co.), SPEX DM 3000F spectroscopy computer. A pH meter (Model Orion 520A, USA) was used for pH adjustment. 

Elemental Analysis and Physical Properties. Elemental analysis was accomplished by conventional microanalytical techniques in a commercial testing laboratory. Densities were measured on a Mettler/Paar digital density meter, model D.M. 40. Number average molecular weights were determined by VPO in benzene. Simulated distillation was accomplished using a 1/4" by 18" column of 3% dexsil 300 on chromosorb W, programmed from -30° to 350°C at 10°/minute with a 4 minute hold at 350°C. The detector was a flame ionization detector maintained at 400°C. 

Often, one finds a linear relation at a very small shear rate, a shear thinning behavior at intermediate shear rate, and a linear relation at high shear rate values (see, e.g., Van Diemen and Stein [18] and Hunter [19]). In this respect, the Meter model may be of special interest if a system behaves like Newtonian fluid at both low and high shear rates ... 

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